Windows 7 pro stalls when installing new programs but not updates

Oh no.. I don't ant to start again... I would rather my pc slowly ground to a halt I think.. So who are the technical wizards who create this software that won't allow itself to be fixed? ..

Can't I just copy over the corrupt dlls (which is where I started?) and please tell me what is the point of buying the pro version with sp1 already on the disks when it means you are totally 'f*****' if you have a problem.. perhaps it should have a warning on it?

Hi maxi, I have my disk partitioned.. programs on one, data on the other- this means I have to copy everything or backup everything completely and then start from scratch does it not? So there is a problem. I don't have a hard drive big enough to hold everything ok? I don't want to rebuild the PC - it would be easier to buy a new one and transfer the data.. This is what the clean install says
Do a Clean Installation if:

• Your computer has no operating system installed, or it’s running a version of Windows prior to Windows Vista with Service Pack 1 (including Windows XP).
• You do NOT want to preserve your data, programs, or system drivers.
• You want to delete your current operating system and replace it with Windows 7.
• You want to create a multiboot system by installing Windows 7 on a separate hard disk partition.

So you are saying I have no data worth preserving? - its like telling somebody to reformat their hard disk!

I do have a backup thank you on another drive.. but I thought I had to delete all partitions for a clean install.. this backup is on a partitioned drive - and something else.. I just tried to reinstall again and this time it said "To upgrade, you need to be running Windows 7 with Service Pack 1 installed. Close the installation, open Windows Update, and then check updates for Service Pack 1..... " but I have sp1 installed.. so I don't understand.. I got this error when I right clicked on setup.exe and under compatability changed it to windows 7 instead of windows vista service pack 2 as first suggested in the reinstall instructions..

Make sure you followed all of the steps in Repair Install tutorial.

If it won't run then turn off everything in msconfig>Startup and >Services after Hiding all MS Services. Uninstall your AV after unplugging from internet or disabling wireless adapter. Then try again.

Does it say SP1 on the Computer>Properties page?

Are you using the exact same version. Try a new installer from Steps 1 and 2 of Clean Reinstall Windows 7.

If you decide to Clean Reinstall Windows 7 then follow all of the steps to make sure everything is backed up first externally. Then delete all partitions during the booted install to get it cleanest. If you have no external backup (you can store 15gb free on Onedrive) then delete all partitions except the data partition. But you should have another backup since the HD can always fail.

If you have any questions about partitioning post back a screenshot of Disk Management - Post a Screen Capture Image so we can advise you exactly.